package main
import "fmt"
var (
	name = "Mason"
	age = 22
	home = "Dongguang"
)

func opertation(num1 int,num2 int) (int ,int ){
	sum := num1 + num2
	sub := num1 - num2
	return sum,sub
}

func main(){
	sum,sub := opertation(5,2)
	fmt.Println("两数和：",sum,"  两数差：",sub)
	str := "My Name is Mason"
	fmt.Println(str)
	fmt.Println("name:",name," age:",age)
	fmt.Println("home: ",home)
}